Photos: American Ninja Warrior tryouts at Civic Center Park

American Ninja Warrior returned to Denver this week to hold tryouts for the TV show. Challengers tackled an obstacle course set up in Civic Center Park in an attempt to prove they have what it takes to be the Ultimate American Ninja Warrior. Photographer Marissa Shevins was there to capture all the feats and falls; keep reading for a look at these would-be warriors.